Phillip Gomm from the RAC foundation says there's been a significant rise in the cost of running a car in the last decade.
He speaks after a report by the RAC showed that people in Wales rely on their car, more than anywhere else in the UK. The Welsh Government acknowledges that public transport is crucial.
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Andrew Lauder, from Wenvoe, south Wales, has been branded a "serial groper".
The deal is welcome news for the site in Broughton which manufactures wings for the aircraft.
Fans queued for hours to get a glimpse of the Royal Couple as they tour Cardiff Castle and visit a community centre.